Pump-valve.



G. A. CONN PUMP VALVE.

APPLIOATION FILED JAN. 24, 1914.

Patented Feb. 23, 1915.

INVENTOR E sums PAT clarion.

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mantra.

wthough of relatively light construction and hence easily operated, will not be broken by repeated excessive pressures on one side of Y In'the several figures like numeralsare a valve seat consistingof a c ent1al ring 1 and an annular ring 2, such rings being in-- it; which will not leak because of ridges being worn in the bearing surface of the closure; and which will be simple and inexpensive to'manufacture,and longlived in service.

In the accompanying sheet of drawings,

which form part of my specification, I'haveillustrated the preferred embodiment of m invention.

Figure 1 is a perspective view'of the complete valve, a portion of the top plate being roken away; Fig. 2 is a central vertical sectional view; and Figs. 3, 4 and 5 are plan views, respectively, of the'top of the stem,.l

valve closure, and valve seat.

used to designatelike parts.

In the practice of my invention I employ tegrally connected to each other by radial bars 3, as particularly shown in Fig. 5. The

outer cylindrical surface of the ring 2 is screw-threaded for attachment to anorifice in a high pressure pump casing, and the center 0 the ring 1' is also preferably screwthreade'dto receive a stem 4. Such seats havebeen used heretofore i'nxvalves of the character contemplated by. myinvention,

and various forms of closures have. been used in connection with them. It has been found that, when lane faced disk closures are used, the radial arms 3, by reason of the continued opening and closing of the valve. wear grooves or depressions in the face of the disks, it being understood that such arms afford essential supports for such disk in addition tothe-central and annular rings of the valve seats. After grooves have been thus 'worn' in the closure, tht valve fre quently leaks because of a relative rotary I rune-wa ve.

s ecification of Lettei't retest. Patented Feb, Q3, 1915-,

Application filed January 24, 1914:. aerial No. Bitllt.

, movement between closure and seat bringexcessive pressures, metal plates or other reinforcing. members have been attached usually to the back ofsuch boss-provided disks. In practice it has been found almost impossible, due regard being given to simplicity and economy in construction, to attach the reinforcing member to the resilient closure in such a manner that in continued service the connection will not be broken. Furthermore .such reinforced closures are usually not reversible, at least this is the case in such closures as have sufficient merit to be put in actual practice.

v The valve closure which I emplo and which I will now particularly describe, is reversible, does not have a reinforcing member attached to it, will not leak by reason of grooves being worn in its surface, and will not be broken by the pressure of the fluid acting on it. As illustrated in the drawings it consists of a disk made of any.

:disk, bears upp'n the upper faces of the bosses 6? and 7 a and closes the groove formed between them. This plate is loosely mounted on the-stem 4, so that it may move longitudinally thereon, and is held yieldingly against the-disk by means of a compression spring 9, bearing at opposite ends against the end of the stem. A further and ver essenplate and a shoulder 10 formed at the tial feature of construction of the va ve consists of the provision of holes 11 through the web 5 of the disk, and without these holes the disk would. in service, be broken bv the fluid pressure. These holes permit the fluid from the lower side of the disk to fill the ner described, substantially all of the diskforming material may be efiectively utilized,

grooveformedbetween the bosses 6 and 7,

and thus the pressure on each side of the web 5 is equalized.

It will be observed of -my invention that the disk bosses adjacent to the valve seat have a continuous even bearing, and that they will therefore wear down even thus preventing leaks. Before thebosses 6 and 7 have worn down to the plane of the web, that is, to a lane indicated-approximately by the dotted line 12, the disk may be reversed,

there being then a shallower, but nevertheless entirely adequate groove adjacent to the plate 8 to equalize the pressure on each side of the web 5. The disk may'then be used until the bosses 6 and? have been entirely worn away as well as'a portion of the,

web 5,-the upper surface of the bars 3 being below the general bearingp'la'ne of the valve seat so that leakage-causing depressions or grooves will not, after the bosses are worn away, be formed in the planeface of the disk web. By this construction, used in the manthus aifording a long-lived and inexpensive valve. I

.I claim as my invention:

In a high pressure pump valve, the combination of a seat havmg central and annular rings with connecting bars between them, a reversible closure disk consisting of an annular web and central and peripheral bosses CHARLES A. CONN.

Witnesses:

PAUL N. CRITCHLOW, FRANCIS J. TOMASSON. 

